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package com.spring.boxes.dollar.support.graphql.scalar;

import graphql.language.StringValue;
import graphql.schema.Coercing;
import graphql.schema.CoercingParseLiteralException;
import graphql.schema.CoercingParseValueException;
import graphql.schema.CoercingSerializeException;
import lombok.extern.slf4j.Slf4j;

import java.time.LocalDate;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;

import static com.spring.boxes.dollar.JSONUtils.DEFAULT_TIME_PATTERN;

@Slf4j
public class LocalTimeScalar implements Coercing {

    @Override
    public LocalTime serialize(Object dataFetcherResult) throws CoercingSerializeException {
        log.debug("[LocalTime] input.serialize:{}", dataFetcherResult.toString());
        if (dataFetcherResult instanceof LocalTime) {
            return ((LocalTime) dataFetcherResult);
        } else {
            throw new CoercingSerializeException("Not a valid LocalTime");
        }
    }

    @Override
    public LocalTime parseValue(Object input) throws CoercingParseValueException {
        log.debug("[LocalTime] input.parseValue:{}", input.toString());
        return LocalTime.parse(input.toString(), DateTimeFormatter.ofPattern(DEFAULT_TIME_PATTERN));
    }

    @Override
    public LocalTime parseLiteral(Object input) throws CoercingParseLiteralException {
        log.debug("[LocalTime] input: {}", input.toString());
        if (input instanceof StringValue) {
            return LocalTime.parse(((StringValue) input).getValue(), DateTimeFormatter.ofPattern(DEFAULT_TIME_PATTERN));
        }
        throw new CoercingParseLiteralException("Value is not a valid ISO date time");
    }
}